1.log信息：提示信息好像说的是布局文件有问题，但是我连setContenView（）里面的文件都给它换过，还是一样的错误信息一点都不会变

 Process: com.lcodecore.twinklingrefreshlayout, PID: 23703

  java.lang.RuntimeException: Unable to start activity ComponentInfo{com.lcodecore.twinklingrefreshlayout/com.lcodecore.twinklingrefreshlayout.MainActivity}: android.view.InflateException: Binary XML file line #29: Binary XML file line #29: Error inflating class <unknown>

    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3047)

2.这里是xml文件

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:context=".MainActivity"
    >

    <android.support.design.widget.AppBarLayout
        android:layout_height="wrap_content"
        android:layout_width="match_parent"
        android:theme="@style/AppTheme.AppBarOverlay"
        app:elevation="0dp">

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:background="?attr/colorPrimary" />

    </android.support.design.widget.AppBarLayout>

    <include layout="@layout/content_main"/>

    <android.support.design.widget.FloatingActionButton
        android:id="@+id/fab"
        android:layout_width="36dp"
        android:layout_height="36dp"
        android:layout_gravity="bottom|end"
        android:layout_margin="16dp"
        android:src="@drawable/ic_create_white_36dp" />

</android.support.design.widget.CoordinatorLayout>

3.这里是Java文件

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        init();
        initAcition();
    }